[XS] Change in coreboot[master]: acpi/acpi.c: Accomodate 64bit MMCONF base in MCFG table

[Martin L Roth (Code Review)]

Martin L Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/77539?usp=email )

Change subject: acpi/acpi.c: Accomodate 64bit MMCONF base in MCFG table
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acpi/acpi.c: Accomodate 64bit MMCONF base in MCFG table

Allow the use of 64bit MMCONF base in MCFG table.
Previously only 32 bits were utilized for MMCONF base, while the
remaining 32bits were reserved & held value of zero as evident from MCFG
table disassembly. This commit entails updating the 'base_address' field
in the 'mmconfig' structure to 64 bits and removing the 'base_reserved'
field.

TEST=Confirmed the functionality of the 64bit MMCONF base in the MCFG
table disassembly below

Signature : "MCFG"
         Table Length : 0000003C
             Revision : 01
             Checksum : BD
               Oem ID : "COREv4"
         Oem Table ID : "COREBOOT"
         Oem Revision : 00000000
      Asl Compiler ID : "CORE"
Asl Compiler Revision : 20230628

Reserved : 0000000000000000

Base Address : 0000001010000000
 Segment Group Number : 0000
     Start Bus Number : 00
       End Bus Number : FF
             Reserved : 00000000

Signed-off-by: Naresh Solanki 
Change-Id: I2f4bc727c3239bf941e1a09bc277ed66ae6b0185
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77539
Reviewed-by: Tim Wawrzynczak 
Tested-by: build bot (Jenkins) 
---
M src/acpi/acpi.c
M src/include/acpi/acpi.h
2 files changed, 2 insertions(+), 4 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Tim Wawrzynczak: Looks good to me, approved

diff --git a/src/acpi/acpi.c b/src/acpi/acpi.c
index e30b7d3..e357f6a 100644
--- a/src/acpi/acpi.c
+++ b/src/acpi/acpi.c
@@ -117,12 +117,11 @@
    return CB_SUCCESS;
 }

-static int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base,
+static int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u64 base,
    			u16 seg_nr, u8 start, u8 end)
 {
    memset(mmconfig, 0, sizeof(*mmconfig));
    mmconfig->base_address = base;
-	mmconfig->base_reserved = 0;
    mmconfig->pci_segment_group_number = seg_nr;
    mmconfig->start_bus_number = start;
    mmconfig->end_bus_number = end;
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index 33bd735..3a7c99c 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -217,8 +217,7 @@
 } __packed acpi_tpm2_t;

typedef struct acpi_mcfg_mmconfig {
-	u32 base_address;
-	u32 base_reserved;
+	u64 base_address;
    u16 pci_segment_group_number;
    u8 start_bus_number;
    u8 end_bus_number;